Hydraulic riveting-machine.



N0. 687,134. I .Patented Nbv. I9, 190|. W. H. DERB-YSHIRE. A HYDRAULIC RIVETING MACHINE.

3 Shee ts-Shaet l.

(No Model.)

Wifi/essed- No. 687,134. Patented Nov. I9, |901.

' W. H`. DERBYSHIRE.I

HYDRAULIC RIVETING MACHINE.

,(Application med July 26, 1899 3 Sheets-Sheet 2,

(No Model- 'me Nonms Evans w. monmuwa.. wAsmNa'r'uN, nfs.

W. H. DERBYSHIHE. HYDRAULIC RIVETING MACHINE.

(No Model.)

UNITED STATES 'PATENT OEEICE.

WILLIAM H. DERBYSHIRE, OF OHAMBERSBURG, PENNSYLVANIA.

HYDRAULIC RIVETING-IVIACHINE.

SPECIFICATION forming part of Letters Patent No. 687,134, dated November 19, 1901. u Application iiled July 26| 1899. Serial No. 725,1;74. (No model.)

To all whom it' may con/cerny:

Be it known that I, WILLIAM H. DERBY- sHIRE,a citizen of theUnited States, and a resident of Chambersburg, Pennsylvania, have invented certain Improvements in Hydraulic Riveting-Machines, of-which the following is a specification.

The object of my invention is to so construct a hydraulic riveting-machine that different pressures may be exerted on the riveting-head. This object I attain by arranging in the present instance three cylinders and providing the riveting-head with three plungers adapted to the cylinders, as fully described hereinafter.

In the accompanying drawings, Figure 1 is a side View of sufcient of a hydraulic riveting-machine to illustrate my invention. Fig. 2 is an enlarged View of a portion of Fig. 1. Fig. 3 is a plan View of Fig. 2 with the two upper cylinders in section. Fig. t is a section on the line 4.- 4;, Fig. 2. Fig. 5 is a section on the line 5 5, Fig. 2; and Fig. 6 isa dctached perspective view of the riveting-head, showing its plungers.

A is the frame of the riveter.

A is the stake, carrying the fixed die a.

The upper end of the frame A has a seat a for the base-plate B, on which the rivetinghead D slides. The riveting-head has flanges d at each side, and plates b extend over the iianges and retain theriveting-head in position. Bolts b pass throughthe plates b and B and into the frame A, thus `rigidly securing the plates to the frame.

At the rear of the frame A is an extension C, formed as clearly shown in Fig. 4, having a recess c, in which rests the cylinder-casting E. Between the extension C and the baseplate B is a space c of sufficient width to allow for the ready packing of the several cylinders from the outside without dismantling the machine. The cylinder-casting E has flanges e, which are bolted to the flanges c2 on an extension C, thus securing the cylinder rigidly tothe frame of the machine. The cylinder-casting has three cylinders E, E2, and E3 formed therein. In the present instance the cylinder E is a large cylinder, being twice the diameter off the cylinders E2 E3. These two cylinders are of the same diameter.

Adapted to each of these cylinders, respectively, are the plunger-s D', D2, and D3 ofthe riveting-head D. It will be noticed in referlring" t0 Fig. 6 that the large plunger D' is hollow and is formed in this manner to allow it to pass the projecting portion of the returncylinder F, also formed in the cylinder-casting E and shown by dotted lines in Fig. 3. A plunger G is adapted to this return-cylinder and passes through a stuffing-boxfat the rear of the cylinder, and this stuting-box is provided with a follower-ring f, so arranged -these stuffing-boxes is arranged suitable packing, confined therein by flanged glands i il i2, confined to the casting by boltsj. The ange of the central gland t' is triangular in shape, and three bolts j hold it in place,while the other glands i i2 for the small cylinders are formed somewhat inthe shape of a diasition. Thus these rings will snugly fit the necessarily-limited space, yet any one or all of the glands can be removed and the stuffing-boxes repacked.

A mond, with two boltsj conning them in po- In order to limit the movement of the riveting-head, I form on the casting A aprojection a?, which extends through the baseplate B and into a recess (Z2 in the under side of the riveting-head. If the riveting-head is moved too far in either direction, the end walls of the recess d2 strike the projection u2,V

and thus the movement of thehead is lim.- ited. By this means I get a very solid abutment Without extra itting.

Any suitable hydraulic valves may be used to direct' the fluid into one, two, or three cylinders simultaneously, according to the work to be done by the riveter. If it is light work,

ICOA

then only the small cylinders need be used; 4

if it is work requiring medium pressure, then the large cylinder is'used, and if it is work requiring heavy pressure then the three cylinders are used.

I do not in this application claim the combination in a riveting-machine of an arm having two extensions, on one of which is carried a cylinder and on the other a riveting-head, with a plunger-section adapted to the cylinder and a recess or cavity in the cylinder, in which a packing is seated and held in place by a removable ring located in the space between the two extensions of the arm, nor to such a construction in which a smaller cylinder with its operating-plunger is located within the larger cylinder on said extension, as such constructions form the subject-matter of the first ve claims of my Patent No. 656,007, granted August 14, 1900.

I have shown in the drawings suitable valve mechanism controlling the flow of uid to or from the cylinders'. I have not described this mechanism in detail, as any suitable form of valve mechanism may be used.

I claim as my inventionl. The combination in a riveting-machine, of a frame, a casting mounted thereon having three cylinders in it, a slide on said frame having three pistons constructed to Work in said cylinders, a stuffing-box in front of each cylinder, and a gland for each stuiiug-box, said glands being removable in a space between the cylinders and the slide, substantially as described.

2. The combination in a riveting-machine, of a frame, a cylinder-casting mounted on the same, three cylinders formed in said casting, two of them being in a plane not passing through the long axis of the third cylinder, three plungers constructed to act in the cylinders, and a riveting head or slide constructed to carry said plungers and to be moved by them, substantially as described.

3. The combination in a riveting-machine, of a frame, a casting mounted thereon having cylinders in it, a slide on said frame having pistons constructed to work in said cylinders, a stuffing-box in front of each cylinder and a gland for each stuffing-box, said glands for all the cylinders being removable in a space between the cylinders and the slide, substan tially as described.

4:. The combination in a riveting-machine,

of a frame, a cylinder-casting mounted on the frame, three cylinders formed in said casting, two of them being above a horizontal plane passing through the long axis of the other, three plungers adapted to the cylinders and carried by a riveting-head, stuflng-boxes and flanged glands therefor, the two upper glands being diamond-shaped and the lower gland triangular, substantially as described.

5. The combination in a riveting-machine, of a frame, a cylinder-casting mounted on the frame, cylinders formed in the said casting, two above a horizontal plane passing through the long axis of the third, spaces below the two upper cylinders, a slide with a cross head having three pistons within the said cylinders, a rear cylindenpiston therefor, a cross-head to which the piston is secured, and rods connecting the cross-head to the slide, said rods passing through the space below the upper cylinder, substantially as described.

6. The combination in a hydraulic rivetingmachine, of a frame, a cylinder-casting on said frame, four cylinders formed in said casting, three ot' said cylinders open at one end and-forming the pressure-cylinders, the other cylinder open at the rear and forming the return-cylinder, a slide, plungers thereon entering the three pressure-cylinders, a piston at the rear entering the return-cylinder, said piston being connected to the slide, substantially as described.

7. The combination in a hydraulic rivetingmachine, ofaframe, a cylinder-casting mounted on said frame, and cylinders formed in said casting, with a slide having an integral crosshead from which project three plungers, one of these being a main plunger hollowed in the rear, a cylinder projecting into the main cylinder, a return-piston in said cylinder, a cross-head and rods connecting said crosshead'with the riveting-head, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

WILLIAM I-l. DER BYSIIIRE.

Witnesses:

G. W. ATHERTON, NEWTON PHENIDE. 

